Question

Which one of the following factors will not affect the Hardy-Weinberg equilibrium?

• A. Genetic recombination
• B. Genetic drift
• C. Gene migration
• D. Constant gene pool

Answer 1

The Correct Option is D

The Hardy-Weinberg equilibrium is a population genetics principle stating that genetic variation remains constant across generations absent disruptive influences. Factors such as genetic drift, gene flow, mutation, non-random mating, and selection can disrupt this equilibrium. We will now examine the provided options to identify the factor that does not impact the Hardy-Weinberg equilibrium:

• Genetic recombination: This process, occurring during meiosis, exchanges genetic material, potentially creating new genetic combinations and altering allele frequencies.
• Genetic drift: Evolution driven by random shifts in allele frequencies, particularly significant in small populations, thus disturbing the equilibrium.
• Gene migration: Also termed gene flow, this involves the transfer of alleles between populations, modifying allele frequencies and consequently affecting equilibrium.
• Constant gene pool: This signifies a stable gene pool with no alterations in allele frequencies. It describes a situation where disruptive factors are absent, thereby preserving the Hardy-Weinberg equilibrium.

Consequently, the accurate response is Constant gene pool, as it denotes an absence of change in allele frequencies, thus maintaining the equilibrium.